金属氢化物在小型钠冷快堆屏蔽设计中的应用

摘要

The ANISN code ,one‐dimensional discrete ordinates transport code , was used for the shield calculation to evaluate the shield capability of metal hydrides in the case of small sodium‐cooled fast reactor’ s energy spectra . The results indicate that LiH ,TiH2 and ZrH2 show superior shield capability .Mixing LiH with stainless steel , TiH2 with boron carbide and ZrH2 with boron carbide ,can improve the shield proper‐ties . T hese compound materials can be used for small sodium‐cooled fast reactor’s shield and significantly reduce the weight and volume of reactor system .%为评估金属氢化物（氢化锂、氢化钛和氢化锆）在小型钠冷快堆中的屏蔽性能，使用一维离散纵标法（A N IS N程序）模拟计算了屏蔽材料在小型钠冷快堆能谱下的屏蔽特性。屏蔽计算结果表明：氢化锂、氢化钛和氢化锆具有很好的屏蔽性能；将氢化锂与不锈钢、氢化钛或氢化锆与碳化硼混合，可改善这些金属氢化物的屏蔽性能。混合材料用于小型钠冷快堆的屏蔽，可显著减少反应堆系统的重量和体积。